MyBB Community Forums - bbcode not working in Preview

here is a screenshot
[Image: 5b75a9c24e05425e9c0d659062f9c530.png]

The thing that I found worked for me is using the share link not URL link a link like this: https://youtu.be/QCwpVtqcqNE

(2016-10-25, 03:44 AM)[PMC] John Wrote: [ -> ]The thing that I found worked for me is using the share link not URL link a link like this: https://youtu.be/QCwpVtqcqNE

its not just youtube , images also dosen't work
[Image: 852427404c484f0eb69282f6a94ae166.png]

(2016-10-25, 03:16 AM)PaBLo__ Wrote: [ -> ]here is a screenshot

Your code its not the same un the preview.

Nevermind the vídeo and images are OK in preview post....

what its your url forum? Do You have a test forum For the people can test online?

In all my forums its Ok the syntaxis:

I think YouTube blocks content from non-share links if the site is not YouTube (checking referralurl that your browser sends to their servers). Facebook do it too.

it is the same !!

[Image: 480e125b081341ed8b54310d8943ebfa.png]

i have reinstalled , and used used a mysql backup but the same problem !!
i have home hosted mybb and it's working fine , do you thing there is some settings should be edited ? because im confused
forum url : http://mw3-samp.com/forum
username test
password: testtest

Test your forum, with vídeo and icon smiles, work perfect in my test of You forum.

Preview imagen post
https://postimg.org/image/taw80bjst/

[Image: Screenshot_2016_10_25_16_04_03.png]

[Image: Screenshot_2016_10_25_16_04_03.png]

(2016-10-25, 09:14 PM)DiegoPino Wrote: [ -> ]Test your forum, with vídeo and icon smiles, work perfect in my test of You forum.

Preview imagen post
https://postimg.org/image/taw80bjst/

that REALLY WEIRD iv also tryed posting with test account and it works just fine lol , so what's the problem ?